CN214039612U - Holding furnace temperature control device for preform rod fusion process - Google Patents
Holding furnace temperature control device for preform rod fusion process Download PDFInfo
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- CN214039612U CN214039612U CN202022501113.3U CN202022501113U CN214039612U CN 214039612 U CN214039612 U CN 214039612U CN 202022501113 U CN202022501113 U CN 202022501113U CN 214039612 U CN214039612 U CN 214039612U
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Abstract
The utility model relates to a holding furnace temperature control device that is used for prefabricated stick to melt and contracts technology, its characterized in that is including holding furnace and heating power supply, and heating power supply passes through the silicon controlled rectifier and links to each other with the holding furnace, and its characterized in that is provided with temperature controller and PLC, temperature controller and silicon controlled rectifier control end meet, PLC and temperature controller meet, set up temperature probe in the holding furnace, temperature probe's output is connected with the temperature controller. The utility model discloses a set up PLC and temperature controller and temperature measurement probe and form closed loop control to the holding furnace, it is instant controllable to make the holding furnace temperature, the constancy of temperature and the temperature distribution of having ensured the holding furnace are even, make the bushing pipe both ends temperature that is melted and contracts keep less difference in temperature with the interlude, thereby avoid the prefabricated stick to melt the prefabricated stick plug that leads to because of the unstability of holding furnace temperature in-process of contracting explode and split, the output rate of plug has not only been improved, the plug parameter defect because of the heating furnace temperature distribution inequality leads to has been eliminated simultaneously, and the processing quality is improved.
Description
Technical Field
The utility model relates to a holding furnace temperature control device for prefabricated stick technique of smelting and shrinking belongs to optical fiber processing equipment technical field.
Background
In the production process of the optical fiber preform rod, a melting and shrinking process is required to be carried out on the liner tube after PCVD deposition, in the melting and shrinking process, the liner tube is heated to a quartz softening point, and the melting and shrinking process flow is completed after procedures of corrosion, closing stroke and the like, so that the optical fiber preform rod core rod capable of carrying out wire drawing is manufactured. In the process of melting and shrinking, high-temperature moving heating needs to be carried out on a liner tube, meanwhile, two ends of the liner tube are provided with holding furnaces for holding the two ends of the liner tube, the holding temperature is generally 900-1000 ℃, the temperature of the holding furnaces is adjusted by adjusting the current input into a heating furnace through a silicon controlled rectifier in the current temperature control mode adopted for the holding furnaces, the effect of holding the liner tube is achieved, the constant temperature control effect is hardly achieved only by means of the silicon controlled rectifier current turn-off mode, the phenomenon of explosion and cracking of a melting and shrinking prefabricated rod core rod with large temperature fluctuation and the defect of core rod parameters often occur, and the yield and the processing quality of the core rod are affected.
Disclosure of Invention
The utility model aims to solve the technical problem that not enough to prior art exists provides a holding furnace temperature controlling means for prefabricated stick melt shrink technology, and it enables the controllable invariant of holding furnace temperature, avoids the fluctuation of holding furnace temperature to improve the yield rate and the processingquality of the melt shrink of prefabricated stick plug of optic fibre.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the temperature control device comprises a holding furnace and a heating power supply, wherein the heating power supply is connected with the holding furnace through a silicon controlled rectifier, and the temperature control device is characterized in that a temperature controller and a PLC are arranged, the temperature controller is connected with a control end of the silicon controlled rectifier, the PLC is connected with the temperature controller, a temperature measuring probe is arranged in the holding furnace, and the output end of the temperature measuring probe is connected with the temperature controller.
According to the scheme, the temperature controller is a YK908 type artificial intelligence adjusting instrument, and the output current of the controllable silicon is controlled in an AI artificial intelligence PID mode.
According to the above scheme, the temperature controller pass through the cable with PLC and be connected, PLC sends the temperature instruction that the heat preservation stove reaches to the temperature controller, sends the required temperature instruction of temperature controller according to PLC, and the temperature controller sets for the target temperature value that needs adjust, detects the real-time temperature of heating furnace and feeds back the temperature controller through temperature probe, and the temperature controller feeds back the real-time temperature of heating furnace to PLC again, forms closed-loop control.
According to the scheme, the temperature measuring probe adopts the thermosensitive sensor as the temperature detecting element.
According to the scheme, the heat preservation furnace adopts a ceramic fiber vacuum forming product, and the resistance wire is embedded in the heating module of the furnace pipe.
According to the scheme, the temperature controller adopts a PID mode to adjust the current output by the controllable silicon to the heating furnace, so that the temperature of the heating furnace is controlled.
According to the scheme, the temperature controller is connected with the ammeter, and the ammeter displays the real-time current output to the heating furnace by the silicon controlled rectifier.
The utility model discloses following beneficial effect has: form closed loop control to the holding furnace through setting up PLC and temperature controller and temperature measurement probe, make the holding furnace temperature immediately controllable, the constancy of temperature and the temperature distribution of having ensured the holding furnace are even, make the liner tube both ends temperature that is melted and contracts keep less difference in temperature with the interlude, thereby avoid the prefabricated stick that the prefabricated stick melts and contracts the in-process and leads to because of the unstability of holding furnace temperature prefabricated stick core burst, the output rate of core stick has not only been improved, the core stick parameter defect because of the heating furnace temperature uneven distribution leads to has been eliminated simultaneously, and the processing quality is improved.
Drawings
Fig. 1 is a schematic diagram of a temperature control device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
One embodiment of the utility model is shown in figure 1, and comprises a holding furnace 1 and a heating power supply 6, wherein the holding furnace adopts a ceramic fiber vacuum forming product, and a resistance wire is embedded in a heating module of a furnace liner; heating power supply 6 passes through controllable silicon 3 and links to each other with the heat preservation stove, is provided with temperature controller 2 and PLC, the temperature controller be YK908 type artificial intelligence adjusting instrument, adopt AI artificial intelligence PID mode to control the output current of controllable silicon, the temperature controller meet with the controllable silicon control end, PLC and temperature controller meet, set up temperature probe 4 in the heat preservation stove, temperature probe's output is connected with the temperature controller, temperature probe adopt heat sensor as temperature detect element. The temperature controller pass through the cable with PLC and be connected, PLC sends the temperature instruction that the heat preservation stove reaches to the temperature controller, sends the required temperature instruction of temperature controller according to PLC, the target temperature value that needs adjust is set for to the temperature controller, detects the real-time temperature of heating furnace and feeds back to the temperature controller through temperature probe, the temperature controller feeds back the real-time temperature of heating furnace to PLC again, forms closed-loop control. The temperature controller is connected with an ammeter 5 which displays the real-time current output to the heating furnace by the controlled silicon.
The utility model discloses a theory of operation: the working power supply of the temperature controller is started, the temperature controller starts to work, a target temperature value to be adjusted is set by the temperature controller according to a temperature instruction required by the temperature controller sent by the PLC, the real-time temperature of the heating furnace is detected by the temperature measuring probe and fed back to the temperature controller, the real-time temperature of the heating furnace is fed back to the PLC by the temperature controller, and when the temperature of the heating furnace is lower than the target temperature, the temperature controller increases the current output by the controllable silicon to the heating furnace, so that the temperature of the heating furnace is increased; when the temperature of the heating furnace reaches the target temperature, the temperature controller reduces the current output by the controllable silicon to the heating furnace, so that the heating furnace keeps continuous low-power operation, and the effect of keeping the temperature of the heating furnace is achieved; when the temperature of the heating furnace exceeds the target temperature, the temperature controller stops the controllable silicon to output current to the heating furnace, so that the temperature of the heating furnace is reduced to the target temperature.
Claims (6)
1. A temperature control device of a holding furnace for a preform rod fusion process is characterized by comprising the holding furnace and a heating power supply, wherein the heating power supply is connected with the holding furnace through a silicon controlled rectifier.
2. The apparatus of claim 1, wherein the temperature controller is a YK908 artificial intelligence (al — k) controller, and the output current of the thyristor is controlled by an AI artificial intelligence (PID) method.
3. The apparatus according to claim 1 or 2, wherein the temperature controller is connected to the PLC via a cable, the PLC sends a temperature command to the temperature controller, the temperature controller sets a target temperature value to be adjusted according to the temperature command sent by the PLC to the temperature controller, the temperature probe detects a real-time temperature of the heating furnace and feeds the real-time temperature back to the temperature controller, and the temperature controller feeds the real-time temperature of the heating furnace back to the PLC to form a closed-loop control.
4. The holding furnace temperature control apparatus for the preform collapsing process according to claim 1 or 2, wherein the temperature measuring probe employs a thermal sensor as a temperature detecting element.
5. The temperature control device of the holding furnace for the preform rod collapsing process according to claim 1 or 2, wherein the holding furnace adopts a ceramic fiber vacuum forming product, and the resistance wire is embedded in the heating module of the furnace liner.
6. The holding furnace temperature control device for the preform collapsing process according to claim 1 or 2, wherein the temperature controller is connected to an ammeter which displays a real-time current output from the thyristor to the heating furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022501113.3U CN214039612U (en) | 2020-11-02 | 2020-11-02 | Holding furnace temperature control device for preform rod fusion process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022501113.3U CN214039612U (en) | 2020-11-02 | 2020-11-02 | Holding furnace temperature control device for preform rod fusion process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214039612U true CN214039612U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022501113.3U Active CN214039612U (en) | 2020-11-02 | 2020-11-02 | Holding furnace temperature control device for preform rod fusion process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860722A (en) * | 2021-12-03 | 2021-12-31 | 武汉长盈通光电技术股份有限公司 | Optical fiber preform manufacturing apparatus and method |
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2020
- 2020-11-02 CN CN202022501113.3U patent/CN214039612U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860722A (en) * | 2021-12-03 | 2021-12-31 | 武汉长盈通光电技术股份有限公司 | Optical fiber preform manufacturing apparatus and method |
| CN113860722B (en) * | 2021-12-03 | 2022-02-11 | 武汉长盈通光电技术股份有限公司 | Optical fiber preform manufacturing apparatus and method |
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